Note: By publishing this standard, the American Welding Society does not insure anyone using the information it
contains against liability arising from that. Publication of a standard by the American Welding Society does not carry
with it any right to make, use, or sell any patented items. Each user of the information in this standard should make an
independent investigation of the validity of that information for the particular use and the patent status of any item
referred to herein.
This standard is subject to revision at any time by the Committee on Piping and Tubing. It must be reviewed every five
years and if not revised, it must be either reapproved or withdrawn. Comments (recommendations, additions, or
deletions) and any pertinent data which may be of use in improving this standard are requested and should be addressed
to AWS Headquarters. Such comments will receive careful considerations by the Committee on Piping and Tubing and
the author of the comment will be informed of the committee’s response to the comments. Guests are invited to attend all
meetings of the Committee on Piping and Tubing to express their comments verbally. Procedures for appeal of an
adverse decision concerning all such comments are provided in the Rules of Operation of the Technical Activities
Committee. A copy of these Rules can be obtained from the American Welding Society, 550 N.W. LeJeune Rd., P.O.
Box 351040, Miami, Florida 33135.
AWS D10.4-1986 (R2000) pdf download
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